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Cambios en acls guias 2010

5.
Capnography Recommendation 2010 ( New ): Continuous quantitative waveform capnography is now recommended for intubated patients throughout the periarrest period. When quantitative waveform capnography is used for adults, applications now include recommendations for confirming tracheal tube placement and for monitoring CPR quality and detecting ROSC based on end-tidal carbon dioxide (PETCO2) values

6.
2005 ( Old ): An exhaled carbon dioxide (CO2) detector or an esophageal detector device was recommended to confirm endotracheal tube placement. The 2005 AHA Guidelines for CPR and ECC noted that PETCO2 monitoring can be useful as a noninvasive indicator of cardiac output generated during CPR. Why : Continuous waveform capnography is the most reliable method of confirming and monitoring correct placement of an endotracheal tube. Although other means of confirming endotracheal tube placement are available, they are not more reliable than continuous waveform capnography. Patients are at increased risk of endotracheal tube displacement during transport or transfer; providers should observe a persistent capnographic waveform with ventilation to confirm and monitor endotracheal tube placement.

11.
Simplified ACLS Algorithm and New Algorithm 2010 ( New ): The conventional ACLS Cardiac Arrest Algorithm has been simplified and streamlined to emphasize the importance of high-quality CPR (including compressions of adequate rate and depth, allowing complete chest recoil after each compression, minimizing interruptions in chest compressions, and avoiding excessive ventilation) and the fact that ACLS actions should be organized around uninterrupted periods of CPR. A new circular algorithm is also introduced 2005 ( Old ): The same priorities were cited in the 2005 AHA Guidelines for CPR and ECC. The box and arrow algorithm listed key actions performed during the resuscitation in a sequential fashion.

12.
Why : For the treatment of cardiac arrest, ACLS interventions build on the BLS foundation of high-quality CPR to increase the likelihood of ROSC. Before 2005, ACLS courses assumed that excellent CPR was provided, and they focused mainly on added interventions of manual defibrillation, drug therapy, and advanced airway management, as well as alternative and additional management options for special resuscitation situations. Although adjunctive drug therapy and advanced airway management are still part of ACLS, in 2005 the emphasis in advanced life support (ALS) returned to the basics, with an increased emphasis on what is known to work: highquality CPR (providing compressions of adequate rate and depth, allowing complete chest recoil after each compression, minimizing interruptions in chest compressions, and avoiding excessive ventilation). The 2010 AHA Guidelines for CPR and ECC continue this emphasis

14.
De-emphasis of Devices, Drugs, and Other Distracters Both ACLS algorithms use simple formats that focus on interventions that have the greatest impact on outcome. To that end, emphasis has been placed on delivery of high-quality CPR and early defibrillation for VF/pulseless VT. Vascular access, drug delivery, and advanced airway placement, while still recommended, should not cause significant interruptions in chest compressions and should not delay shocks.

15.
New Medication Protocols 2010 ( New ): Atropine is not recommended for routine use in the management of PEA/asystole and has been removed from the ACLS Cardiac Arrest Algorithm . The treatment of PEA/ asystole is now consistent in the ACLS and pediatric advanced life support (PALS) recommendations and algorithms. The algorithm for treatment of tachycardia with pulses has been simplified. Adenosine is recommended in the initial diagnosis and treatment of stable, undifferentiated regular, monomorphic wide-complex tachycardia (this is also consistent in ACLS and PALS recommendations). It is important to note that adenosine should not be used for irregular wide-complex tachycardias because it may cause degeneration of the rhythm to VF. For the treatment of the adult with symptomatic and unstable bradycardia, chronotropic drug infusions are recommended as an alternative to pacing.

16.
2005 ( Old ): Atropine was included in the ACLS Pulseless Arrest Algorithm: for a patient in asystole or slow PEA, atropine could be considered. In the Tachycardia Algorithm, adenosine was recommended only for suspected regular narrow-complex reentry supraventricular tachycardia. In the Bradycardia Algorithm, chronotropic drug infusions were listed in the algorithm after atropine and while awaiting a pacer or if pacing was ineffective.

17.
Why : There are several important changes regarding management of symptomatic arrhythmias in adults. Available evidence suggests that the routine use of atropine during PEA or asystole is unlikely to have a therapeutic benefit. For this reason, atropine has been removed from the Cardiac Arrest Algorithm. On the basis of new evidence of safety and potential efficacy, adenosine can now be considered in the initial assessment and treatment of stable, undifferentiated regular, monomorphic wide-complex tachycardia when the rhythm is regular . For symptomatic or unstable bradycardia, intravenous (IV) infusion of chronotropic agents is now recommended as an equally effective alternative to external transcutaneous pacing when atropine is ineffective.

18.
Organized Post–Cardiac Arrest Care 2010 ( New ): Post–Cardiac Arrest Care is a new section in the 2010 AHA Guidelines for CPR and ECC. To improve survival for victims of cardiac arrest who are admitted to a hospital after ROSC, a comprehensive, structured, integrated, multidisciplinary system of post–cardiac arrest care should be implemented in a consistent manner. Treatment should include cardiopulmonary and neurologic support. Therapeutic hypothermia and percutaneous coronary interventions (PCIs) should be provided when indicated (see also Acute Coronary Syndromes section). Because seizures are common after cardiac arrest, an electroencephalogram for the diagnosis of seizures should be performed with prompt interpretation as soon as possible and should be monitored frequently or continuously in comatose patients after ROSC.

19.
2005 ( Old ): Post–cardiac arrest care was included within the ACLS section of the 2005 AHA Guidelines for CPR and ECC. Therapeutic hypothermia was recommended to improve outcome for comatose adult victims of witnessed out-of-hospital cardiac arrest when the presenting rhythm was VF. In addition, recommendations were made to optimize hemodynamic, respiratory, and neurologic support, identify and treat reversible causes of arrest, monitor temperature, and consider treatment for disturbances in temperature regulation. However, there was limited evidence to support these recommendations.

20.
Why : Since 2005, two nonrandomized studies with concurrent controls and other studies using historic controls have indicated the possible benefit of therapeutic hypothermia after in-hospital cardiac arrest and out-of-hospital cardiac arrest with PEA/asystole as the presenting rhythm. Organized post–cardiac arrest care with an emphasis on multidisciplinary programs that focus on optimizing hemodynamic, neurologic, and metabolic function (including therapeutic hypothermia) may improve survival to hospital discharge among victims who achieve ROSC after cardiac arrest either in or out of hospital. Although it is not yet possible to determine the individual effect of many of these therapies, when bundled as an integrated system of care, their deployment has been shown to improve survival to hospital discharge.

21.
Therapeutic Hypothermia After Cardiac Arrest: An Advisory Statement by the Advanced Life Support Task Force of the International Liaison Committee on Resuscitation. Circulation 2003;108;118-121

22.
Timing of Cooling Cooling should probably be initiated as soon as possible after ROSC but appears to be successful even if delayed (eg, 4 to 6 hours). In the European study, the interval between ROSC and attainment of a core temperature of 32°C to 34°C had an interquartile range of 4 to 16 hours. Therapeutic Hypothermia After Cardiac Arrest: An Advisory Statement by the Advanced Life Support Task Force of the International Liaison Committee on Resuscitation. Circulation 2003;108;118-121

23.
These techniques include: The use of cooling blankets; application of ice packs to the groin, axillae, and neck; use of wet towels and fanning; and use of a cooling helmet. In a recent study, intravenous infusion of 30 mL · kg1 of crystalloid at 4°C over 30 minutes reduced core temperature significantly and did not cause pulmonary edema. Cooling by peritoneal and pleural lavage is possible but not generally used. Extracorporeal cooling methods are efficient but too invasive for use in the prehospital environment or most emergency departments. An intravascular heat exchange device, which enables rapid cooling and precise temperature control, has recently become available.

24.
Tapering of Inspired Oxygen Concentration After ROSC Based on Monitored Oxyhemoglobin Saturation 2010 ( New ): Once the circulation is restored, monitor arterial oxyhemoglobin saturation. It may be reasonable, when the appropriate equipment is available, to titrate oxygen administration to maintain the arterial oxyhemoglobin saturation ≥ 94%. Provided that appropriate equipment is available, once ROSC is achieved, the fraction of inspired oxygen (FIO2) should be adjusted to the minimum concentration needed to achieve arterial oxyhemoglobin saturation ≥94%, with the goal of avoiding hyperoxia while ensuring adequate oxygen delivery. Because an oxyhemoglobin saturation of 100% may correspond to a PaO2 anywhere between approximately 80 and 500 mm Hg, in general it is appropriate to wean the FIO2 for a saturation of 100%, provided that the saturation can be maintained ≥94%. 2005 ( Old ): No specific information about weaning was provided

25.
Why : In effect, the oxyhemoglobin saturation should be maintained at 94% to 99% when possible. Although the ACLS Task Force of the 2010 International Consensus on CPR and ECC Science With Treatment Recommendations 2,3 did not find sufficient evidence to recommend a specific weaning protocol, a recent study 5 documented harmful effects of hyperoxia after ROSC. As noted above, an oxygen saturation of 100% may correspond to a PaO2 anywhere between approximately 80 and 500 mm Hg. The ACLS and PALS expert consensus is that if equipment is available, it may be reasonable to titrate inspired oxygen on the basis of monitored oxyhemoglobin saturation to maintain a saturation of ≥94% but <100%.

28.
Why : Cardiac arrest in special situations may require special treatments or procedures beyond those provided during normal BLS or ACLS. These conditions occur infrequently, so it is difficult to conduct randomized clinical trials to compare therapies. As a result, these unique situations call for experienced providers to go beyond basics, using clinical consensus and extrapolation from limited evidence. The topics covered in the 2005 AHA Guidelines for CPR and ECC have been reviewed, updated, and expanded to 15 specific cardiac arrest situations. Topics include significant periarrest treatment that may be important to prevent cardiac arrest or that require treatment beyond the routine or typical care defined in the BLS and ACLS guidelines.

30.
A well-organized approach to ST-segment elevation myocardial infarction (STEMI) care requires integration of community, EMS, physician, and hospital resources in a bundled STEMI system of care. This includes educational programs for recognition of ACS symptoms, development of EMS protocols for initial call center instruction and out-of-hospital intervention, and emergency department (ED) and hospital-based programs for intrafacility and interfacility transport once ACS is diagnosed and definitive care is determined

31.
An important and key component of STEMI systems of care is the performance of out-of-hospital 12-lead ECGs with transmission or interpretation by EMS providers and with advance notification of the receiving facility. Use of outof- hospital 12-lead ECGs has been recommended by the AHA Guidelines for CPR and ECC since 2000 and has been documented to reduce time to reperfusion with fibrinolytic therapy. More recently, out-of-hospital 12-lead ECGs have also been shown to reduce the time to primary PCI and can facilitate triage to specific hospitals when PCI is the chosen strategy. When EMS or ED physicians activate the cardiac care team, including the cardiac catheterization laboratory, significant reductions in reperfusion times are observed.

32.
The performance of PCI has been associated with favorable outcomes in adult patients resuscitated from cardiac arrest. It is reasonable to include cardiac catheterization in standardized post–cardiac arrest protocols as part of an overall strategy to improve neurologically intact survival in this patient group. In patients with out-of-hospital cardiac arrest due to VF, emergent angiography with prompt revascularization of the infarct-related artery is recommended. The ECG may be insensitive or misleading after cardiac arrest, and coronary angiography after ROSC in subjects with arrest of presumed ischemic cardiac etiology may be reasonable, even in the absence of a clearly defined STEMI. Clinical findings of coma in patients before PCI are common after out-of-hospital cardiac arrest and should not be a contraindication to consideration of immediate angiography and PCI (see also Post–Cardiac Arrest Care section).

33.
2010 ( New ): Supplementary oxygen is not needed for patients without evidence of respiratory distress if the oxyhemoglobin saturation is ≥94%. Morphine should be given with caution to patients with unstable angina. 2005 ( Old ): Oxygen was recommended for all patients with overt pulmonary edema or arterial oxyhemoglobin saturation <90%. It was also reasonable to administer oxygen to all patients with ACS for the first 6 hours of therapy. Morphine was the analgesic of choice for pain unresponsive to nitrates, but it was not recommended for use in patients with possible hypovolemia.

34.
Why : Emergency medical services providers administer oxygen during the initial assessment of patients with suspected ACS. However, there is insufficient evidence to support its routine use in uncomplicated ACS. If the patient is dyspneic, is hypoxemic, or has obvious signs of heart failure, providers should titrate oxygen therapy to maintain oxyhemoglobin saturation ≥94%. Morphine is indicated in STEMI when chest discomfort is unresponsive to nitrates. Morphine should be used with caution in unstable angina/non-STEMI, because morphine administration was associated with increased mortality in a large registry.

37.
2010 ( New ): In adult post–cardiac arrest patients treated with therapeutic hypothermia, it is recommended that clinical neurologic signs, electrophysiologic studies, biomarkers, and imaging be performed where available at 3 days after cardiac arrest. Currently, there is limited evidence to guide decisions regarding withdrawal of life support. The clinician should document all available prognostic testing 72 hours after cardiac arrest treated with therapeutic hypothermia and use best clinical judgment based on this testing to make a decision to withdraw life support when appropriate. 2005 ( Old ): No prognostic indicators had been established for patients undergoing therapeutic hypothermia. For those not undergoing therapeutic hypothermia, a metaanalysis of 33 studies of outcome of anoxic-ischemic coma documented that the following 3 factors were associated with poor outcome: • Absence of pupillary response to light on the third day • Absence of motor response to pain by the third day • Bilateral absence of cortical response to median nerve somatosensory-evoked potentials when used in normothermic patients who were comatose for at least 72 hours after a hypoxic-ischemic insult

38.
Why : On the basis of the limited available evidence, potentially reliable prognosticators of poor outcome in patients treated with therapeutic hypothermia after cardiac arrest include bilateral absence of N20 peak on somatosensory evoked potential ≥24 hours after cardiac arrest and the absence of both corneal and pupillary reflexes ≥3 days after cardiac arrest. Limited available evidence also suggests that a Glasgow Coma Scale Motor Score of 2 or less at day 3 after sustained ROSC and the presence of status epilepticus are potentially unreliable prognosticators of poor outcome in post–cardiac arrest patients treated with therapeutic hypothermia.